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Finding the Fourth Proportional to 488,037.83, 728,734.59 and 430,633.32

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Solution

The fourth proportional to 488,037.83, 728,734.59 and 430,633.32 is: 643,018.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,037.83 : 728,734.59 = 430,633.32 : x
  2. Step 2: Convert to fraction form
    488,037.83/728,734.59 = 430,633.32/x
  3. Step 3: Cross multiply
    488,037.83x = 728,734.59 × 430,633.32
  4. Step 4: Simplify right side
    488,037.83x = 313,817,395,890.54
  5. Step 5: Solve for x
    x = 313,817,395,890.54/488,037.83
  6. Step 6: Final answer
    x = 643,018.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.